#!/usr/bin/env python
# coding: utf-8

# In[8]:


#练习1
bigs = ['A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z']
smalls = ['a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z']
for big, small in zip(bigs, smalls):
    print(big,'-',small)


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